I use both the pico 4 and the quest 2. everything works fine on both of them.
I have used oculus link, airlink, virtual desktop and Streaming assistant. the bug occurs in all of those softwares, ONLY with unreal engine set to direct x 12. This is Unreal engine 5.3 and 5.3.1 exclusive.
if I switch to DX11, the bug dissapears.
I am up to date on my GPU drivers, and some people in some discords have the same bug as I do, but with the pimax, as an example.
here is one such example.
Edit: I see you already posted there, lol